Web Accessibility Evaluation Via XSLT

  • Vicente Luque Centeno
  • Carlos Delgado Kloos
  • José Ma Blázquez del Toro
  • Martin Gaedke
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4832)


Web accessibility rules, i.e., the conditions to be met by Web sites in order to be considered accessible for all, can be (partially) checked automatically in many different ways. Many Web accessibility evaluators have been developed during the last years. For applying the W3C guidelines, their programmers have to apply subjective criteria, thus leading to different interpretations of these guidelines. As a result, it is easy to obtain different evaluation results when different evaluation tools are applied to a common sample page. However, accessibility rules can be better expressed formally and declaratively in rules that assert conditions over the markup. We have found that XSLT can be used to represent templates addressing many accessibility rules involving the markup of Web pages. Even more, we have found that some specific conditions relaying in the prose of the XHTML specification not previously formalized in the XHTML grammar (the official DTD or XML Schemas) could also be formalized in XSLT rules as well. Thus, we have developed WAEX as a Web Accessibility Evaluator in a single XSLT file. Such XSLT file contains 70+ singular accessibility and XHTML-specific rules not previously addressed by the official DTDs or Schemas from W3C.


Template Match Accessibility Condition Alternative Text Accessibility Barrier Redundant Link 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Vicente Luque Centeno
    • 1
  • Carlos Delgado Kloos
    • 1
  • José Ma Blázquez del Toro
    • 1
  • Martin Gaedke
    • 2
  1. 1.Carlos III University of Madrid 
  2. 2.University of Karlsruhe 

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